Petroglyph N22 Khatm Al Melaha, Kalba, Sharjah

Natural Version with paint, Petroglyph N22 Khatm Al Melaha, Kalba, Sharjah. One Ibex or similar animal. Likely Neolithic or earlier. [Fossati 2019 Messages from the Past: Rock Art of the Al-Hajar Mountains (Oman)]. Khatm Al Melaha is an archaeological site on the coast of the Oman Sea near Kalba in Sharjah, UAE. It is one of the largest rock art sites in the UAE. Over 175 stones with petroglyphs were documented and close to 400 motifs were identified. Every rock with a glyph was given an ID number and a GPS coordinate. In total 25455 terrestrial photographs, 5244 drone photographs, 44 drone videos, and 182 GPS points (+/- 1cm) were done in a single day. Petroglyphs were identified using Radiance Scaling in Meshlab, materials lighting in Substance Painter, and by changing conditions in Sketchfab. Some carvings were completely invisible when viewing. Drawings were done only when a line could be identified using one of these techniques. Reality Capture and Substance Painter Source: Objaverse 1.0 / Sketchfab带彩绘的自然遗存：阿联酋沙迦卡尔巴的哈特姆·阿尔·梅拉哈（Khatm Al Melaha）N22号岩刻（petroglyph）。刻画有一只羱羊（Ibex）或类似动物，年代推测为新石器时代或更早。[引自Fossati 2019年《来自过去的讯息：哈杰尔山脉（阿曼）的岩画艺术》] 哈特姆·阿尔·梅拉哈遗址是坐落于阿联酋沙迦卡尔巴附近阿曼海沿岸的考古遗址，同时也是阿联酋境内规模最大的岩艺术遗址之一。 该遗址已记录175余块带有岩刻的石块，识别出近400个岩刻纹样。每一块带有刻痕的岩石均被分配唯一标识编号与GPS坐标。本次数据采集于单日完成，总计获取25455张地面摄影照片、5244张无人机航拍照片、44段无人机航拍视频，以及182个精度为±1cm的GPS测点。 本次岩刻识别采用了MeshLab中的辐射度缩放工具（Radiance Scaling）、Substance Painter的材质光照模拟功能，以及Sketchfab的场景条件调整功能。部分刻痕在常规视角下完全不可见，仅当通过上述任一技术可识别出刻线时，才会进行绘图标注。 数据处理工具：Reality Capture、Substance Painter 数据集来源：Objaverse 1.0 / Sketchfab